MAP muscular unti Flashcards
Where is smooth muscles
Lining contracting organs (involuntary)
Where is skeletal muscle
Attached to bones (voluntary)
Where is cardiac muscle
heart (involuntary)
Contractibility
Ability to shorten and produce force
Extensibility
Ability to elongate
Elasticity
Ability to return to resting length
Excitability
Ability to respond to stimuli
3 elements necessary for muscular contraction
Potassium, sodium, and calcium
Does myosin move or stay
Moves actin
Does actin move or stay
Myosin moves actin
What is origin
Stays
What is insertion
moves
What does the prime mover do
Majority of force when movement is executed
What does the antagonist do
Muscle that performs the opposite movement of the prime mover
Synergist
Muscle that assists the prime mover by providing additional force
Fixator
Muscle that functions to stabilize a joint or body position
What disorder is widespread musculoskeletal pain
Fibromyalgia
What disorder is a group of diseases that causes progressive weakness and loss of muscle mass.
Muscular dystrophy
What disorder is cause by overuse or repetitive stress injury of the shin area
Medial tibial stress syndrome (shin splints)
What disorder is damage to the muscle fibers that attach the muscle to the bone
Strain
